機器
agriculture
ancient
architecture
asia
building
canal
countryside
culture
dam
drain
dry
engineer
engineering
farm
field
floodgate
gate
grass
green
hydroelectric
indonesia
irrigation
lake
landmark
landscape
natural
nature
old
outdoor
plant
prevent
project
pump
rice
rice field
rice fields
river
soil
summer
technology
terraces
traditional
travel
tree
vintage
wall
water
water dam
watergate